Well rig elevator



July 5, 1938. J. B. CONNER 2,122,513

WELL RIG ELEVATOR Filed Nov. 9, 1936 2 Sheets-Sheet l A itorneys July 5,1938. 2,122,513

J. B. CONNER WELL RIG ELEVATOR Filed Nov. 9, 1956 2 Sheets-Sheet 2 l I Il l I I Inventor A iiorneys Patented July 5, 1938 UNITED STATES PATENTOFFICE 4 Claims.

The present invention relates to new and useful improvements inelevators for oil or gas well rigs or derricks and has for its primaryobject to provide, in a manner as hereinafter set forth, a

5 device of this character embodying novel means for automaticallycentering the pipe in the well casing while at the same time firmlysecuring said pipe.

Another very important object of the invention is to provide an elevatorof the aforementioned character comprising a pair of hingedly connectedcomplemental sections together with novel means for releasably securingsaid sections in closed position around the pipe.

Other objects of the invention are to provide an elevator of thecharacter described which will be comparatively simple in construction,strong, durable, highly efficient and reliable in use, compact, light inweight and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:-

Figure 1 is a view in front elevation of an elevator constructed inaccordance with the present invention.

Figure 2 is a view in side elevation thereof.

Figure 3 is a top plan view.

Figure 4 is a fragmentary View in vertical section, taken substantiallyon the line 44 of Figure 1.

Figure 5 is a fragmentary view in rear elevation of the device.

Referring now to the drawings in detail, it will be seen that theembodiment of the invention which has been illustrated comprises ametallic ring which is designated generally by the reference numeral I,said ring including a pair of complemental half sections 2 and 3 whichare hingedly connected at one end, as at 4. Projecting fromdiametrically opposite sides of the ring I are tapered guides 5, Atapered guide 6 projects from the hingedend of the ring section 2adjacent the hinge 4, while tapered guides 1 and 8 are provided on thefree end portions of the ring sections 2 and 3. It will be observed thatthe guide 8 is spaced from the free end of the ring section 3, thusproviding a chamber 9 for the reception of a latch which is designatedgenerally by the reference numeral lll. It will also be observed thatthe side guides 5 are wider than the guides to 8, inclusive. Formedintegrally with the upper end of the guide 6 is an apertured ear ll inwhich a lifting ring I2 is loosely mounted.

, Ears l3 project from the guides l and 8, as shown to advantage inFigure 1 of the drawings, said ears having openings therein for registrywith each other when the ring sections 2 and 3 are closed. The latch I0includes a vertical cylinder M in which a bolt I is slidably mounted. Acollar IB is provided on the lower portion of the bolt [5 in thecylinder M for engagement by a coil spring I! for yieldingly urging saidbolt downwardly. As best seen in Figure 4 of the drawings, the lower endportion of the bolt I5 is engageable in the registering openings of theears l3 for releasably locking the ring sections 2 and 3 in closedposition.

The latch I0 further includes a lifting plate l8 for the bolt 15 whichis secured on the upper end portion of said bolt. The lifting plate l8comprises an upstanding integral neck [9 in which the bolt I5 is securedby a pin 20.

It is thought that the manner of using the device will be readilyapparent from a consideration of the foregoing, particularly to thoseskilled in the art to which said device pertains. A hoist line (notshown) is attached to the ring l2 and the ring sections 2 and 3 areclosed around the section of the pipe to be raised or lowered in thewell between the coupling or joint of the pipe. The device is, ofcourse, secured in closed position by the latch I0. The tapered guides 5to B, inclusive, engage the walls of the well casing in a manner toautomatically center the pipe therein. When the bolt I5 is in lowered orlocking position the lifting plate 18 is engaged between the guides 'land 8 in a manner to be protected thereby, thus preventing said platefrom being accidentally elevated and unlocking the device. In order toopen the ring sections 2 and 3 for releasing the pipes the bolt I5 israised and the bolt 15 may be held in raised position against thetension of the coil spring IT by swinging the lifting plate [8 over theupper end of the guide 8. The reference numeral 2| designates a suitablefitting for lubricating the latch l0. Hand holds in the form of openrims 22 connect the upper portions of the guides of the ring sections 2and 3 in spaced relation from said ring sections to facilitate placingsaid ring sections around the pipe.

It is believed that the many advantages of an elevator constructed inaccordance with the present invention will be readily understood, andalthough a preferred embodiment of the device is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement of parts may beresorted to which will fall within the scope of the invention asclaimed.

What is claimed is:

1. An elevator or" the class described comprising a ring including apair of complemental half sections hingedly connected at one end, meansfor releasably securing the rings together in closed position around apipe, tapered guides projecting from the ring for centering the pipe inthe well casing of a well, and a rim connecting the upper portions ofthe guides in spaced relation to the ring sections, said rimconstituting a hand grip.

2. An elevator of the class described comprising a ring including a pairof complemental half sections hingedly connectedlatonesend, tapered;

guides on the ring for centering the same in a well casing, a pair ofthe guides being on the free end portions of the ringsections. andbeingspaced romieach r n a manner de e chamb therebetween, ears. onsaidcertain guides having openings therein for registry with each otherwhen the ring sections are in, closed position around a pipe section,an-d'a latch'mounted, on

one ot said certain guidesand engageable in the ears. for releasablylocking ther ring sections in,

ciosed. position,

3 An elevator of, theclass described comprising a" ring including apair. of complemental half sections hingedly connected at one end,tapered guides on the ring for centering the, same in a well casing,certain of the guides being onv the free end portions of the ringsections and being spaced from each other a manner to define a chambertherebetween, ears on said certain guides having openings therein forregistry with each other when the ring sections are in closed positionaround a pipe section, and a latch mounted on one of said certain guidesand engageable in the ears for releasably locking the ring sections inclosed position, said latch including a cylinder, aspxgingactuated boltmounted for vertical reciprocation in said cylinder, and a lifting platemounted on the upper end portion of said bolt, said lifting plate beingengaged in the chamber when the bolt is in operative position and beingengageable on said one of said certain guides for holdingthe bolt ininoperative position.

4'. An elevator of the class described comprising aringincllldz w-napair of complemental half sections hingedly connected at one end andengageable around a pipe, a plurality of spaced, tapered guidesprojectingfromthe ringsections, certain 01$ saidguidesbeing on the freeendpprg tionsot the ring sections and spaced from; each; other ferproviding-a chamber therebetween, and a latch mounted in said chamberfor releasably:

. locking the ring sections in closed position, said;

latch including a spring actuated reciprocating bolt, and a liftingplate mounted on said bolt and, being. enga eable in. the chamber,between, said certain, guides. whenthev bolt is in operativeposi.-.tion, said plate further being engageable on oneg of. said, certainguides for securing the bolt in, inoperative position. a '7 JULIANBUFORD CONNER.

